basic if statement tests

test/compiler/statements/test_if.rb

@@ -0,0 +1,74 @@
+require_relative 'helper'
+
+class TestIfStatement < MiniTest::Test
+  include Statements
+
+  def test_if_basic
+    @string_input = <<HERE
+class Object
+  int main()
+    if( 10 < 12)
+      return 3
+    else
+      return 4
+    end
+  end
+end
+HERE
+  @expect =  [[Virtual::MethodEnter,Register::LoadConstant,Register::LoadConstant,
+                Register::OperatorInstruction,Register::IsZeroBranch] ,
+                [Register::LoadConstant,Register::AlwaysBranch] ,[Register::LoadConstant]  ,[] ,
+                [Virtual::MethodReturn]]
+  check
+  end
+
+
+  def test_if_small
+    @string_input = <<HERE
+class Object
+  int main()
+    if( 10 < 12)
+      return 3
+    end
+  end
+end
+HERE
+  @expect =  [[Virtual::MethodEnter,Register::LoadConstant,Register::LoadConstant,
+                Register::OperatorInstruction,Register::IsZeroBranch] ,
+                [Register::AlwaysBranch] ,[Register::LoadConstant]  ,[] ,
+                [Virtual::MethodReturn]]
+  check
+  end
+
+
+  def ttest_return
+    @string_input = <<HERE
+class Object
+  int main()
+    return 5
+  end
+end
+HERE
+  @expect =  [[Virtual::MethodEnter,Register::LoadConstant] , [Virtual::MethodReturn]]
+  check
+  end
+
+
+  def ttest_call_function
+    @string_input = <<HERE
+class Object
+  int itest(int n)
+    return 4
+  end
+
+  int main()
+    itest(20)
+  end
+end
+HERE
+    @expect =  [ [Virtual::MethodEnter,Register::GetSlot,Register::SetSlot,Register::LoadConstant,
+                  Register::SetSlot,Register::LoadConstant,Register::SetSlot,Virtual::MethodCall,
+                  Register::GetSlot] ,[Virtual::MethodReturn] ]
+  check
+  end
+end